Oil burner



v/ r l Nev. 4, 1930.

ntoz 5 J. Earl-EU:

attorney Nov. 4, 1930. J. J. BARI-RETT 1,780,219

OIL BURNER Filed March 19, 19 24 2 Sheets- Sheet 2 Patented Nov. 4, 1930UNITED STATES PATENT OFFICE;

JAKE JOSEPH BARRETT, 01 WHITE PLAINS, NEW YORK, ASSIGNOR TO BARRETT BLUEBLAZE BURNER 00., INC., A CORPORATION OF NEWYOBK OIL BURNER Applicationfiled March 19, 1924. Serial No. 700,338.

This invention relates to improvements in oil burning apparatus.

The primary object to this invention is the provision of an improved oilburner embodying an improved vaporizing arrangement by,

A further and important object of this invention is the provision of anovel design of oil burner embodying novel receptacle and bafiieelements so associated that oil may be most effectively vaporized andled to a place for ignition.

A further object of this invention is the provision of an oil burnershowing certain novel features of an oil burner set forth in myco-pending application Serial No. 685,165; filed January 9, 1924.

Other objects and advantages of this invention will be apparent duringthe course of the following detailed description. 7

In the accompanying drawings, forming a part of this specification, andwherein similar reference characters designate corresponding partsthroughout the several views,

Figure 1 is a fragmentary view of a furnace showing the improved oilburner apparatus as associated therewith.

Figure 2 is a fragmentary cross sectional view taken through theimproved oil burner. Figure 3 is a planview of the improved oil burner.

Figure 4.- is a view taken substantially on the line 4-4 of Figure 2,showing the upper part of the burner housing and bafiie.

Figure 5 is a fragmentary cross sectional view of a modified form of oilburner showing certain improved details together with features of theoil burner illustrated in Figure 2.

In the drawings, wherein for the purpose of illustration is shown only apreferred and modified form of this invention, the letter A maygenerally designate the improved oil burner which is adapted to be usedwith a furnace B of any approved construction. The oil burner apparatuspreferably includes a receptacle C,'upon which and with which animproved member D is associated. Means E are provided for feeding of oilor liquid fuel to the receptacle G, and means F are provided for feedinga blast of air into the oil receptacle C in a novel manner.

Referring to the receptacle construction C of the oil burner the samepreferably comprises a pan portion 10 which is of hollow. semi-sphericalformation, providing an oil receiving compartment 11 therein. At theannular margin of the pan portion 10 a reduced upwardly extending flange12 is provided toward the inside surface of the pan portion 10.Centrally of the pan portion 10,

and extending upwardly'within the compartment 11 is a tubular projection15 pro viding a passageway 16 therein through which air flows from theconstruction F. Laterally thereof an internally screw threaded opening18 may be provided which is adapted to receive screw threaded end of apipe coupling 19; the latter being a detail of the oil feed means Ewhich will be subsequently described. The receptacle or housing Cfurthermore includes the upper annular portion 20,, which at the lowermarginal edge thereof provides a reduced flange 21 adapted to cooperateexteriorly of the flange 12 of the pan portion 10 in providing a lapjoint for the pan and its extension 10 and 20 respectively. Theextension'or' annular portion 20 extends upwardly from its connectionwith the pan 10 in vertical manner, and just below the upper marginaledge 22 of the portion 20, and exteriorly of said portion, an annularflange 23 is provided to support the member D in a manner to besubsequently described.

The member D is of novel formation, and may be referred to as adeflector, baffle, or

- the like, and comprises the hemi-spherical positioned just upwardly ofthe top hollowed body portion 30, which adjacent its upper marginalsurface 31 and extending radially outwardly therefrom. provides thesubstantially L-shaped supporting legs 33, which at their outer endsinclude depending lugs 34 adapted to seat upon the flange 23 of the oilburner receptacle C in order to support the member D in a depending relation within the compartment of the receptacle C. The member D is thussupported in depending relation within the receptacle C directly overthe exit end of the air passageway 16, and in a cooperating relationtherewith to permit the proper passage of vaporized fuel to the ignitionpoint adjacent the top margin 22 of the receptacle C. Adjacent its upperedge 31 the body 30 is provided with the outwardly and upwardly flaringsurface 36 which is arranged in a divergin relation from the convexsurface 37 of the dy 30; this flaring surface 36 being marginal edge 22of the receptacle C and eing provided for the purpose of guiding thefuel vapors outwardly; the fuel vapors igniting adjacent this point andbeing distributed in the broadest manner throughout the interior of thefurnace.

' With respect to the application of the receptacle C and its member Din the furnace B, suitable supporting legs 40 may be provided forsupporting the receptacle within the furnace B: the legs 40 havingadjustable couplings 41 thereon by means of which the legs may beadjusted to proper lengths for supporting the oil burner so that theignition circle is at a desired elevation in the furnace.

In connection with the oil burning apparatus A, the oil feed means Eincludes a supply tank 45, and the oil may be fed from this tank 45through a line 46 to the coupling 19 above mentioned. In the line 46 ispreferably disposed a float controlled device 47 which is adapted toregulate the supply of oil in the receptacle compartment 11, so that thelevel of the oil in this compartment is always below 'the top margin ofthe tubular extension 15. A valve 48 may be provided in the line 46above the float valve for the purpose of shutting off the supply of fuelfrom the tank 45, or for properly regulating the amount of fuel whichflows through the line 46, so that the float valve mechanism need onlyoperate for closing when the burner is inoperatively maintained. A si htglass 49 may be provided in the line tween the float valve mechanism 47and the cut-off valve 48, for the purpose of determining the normalamount of fuel which the burner will regularly consume.

The means F for supplying a draft or a blast of air to the passageway 16of the oil burner preferably comprises a pipe or tube 50 which mayextend upwardly into the passageway 16 and which is provided with thetrumpet or outwardly flaring portion 51 so that a considerable body ofair may be trapped therein for feed through the constricted tube 50 intothe air burner receptacle. A damper 53 may be positioned for adjustmentin the trumpet portion 51. In connection with the supply of air for theair burner, means may be provided in cooperation with the trumpet 51 andtube 50 for forcing a draft of air through the compartment of thereceptacle G; this means consisting of a fan or turbine 55 mounted upona base 56-, for the purpose of forcing air through a pipe line 57. Atubular extension 58 is provided upon the pipe line 57 which may extendwithin the compartment of the trumpet 51 into abutting relation with theconstricted portion of the trumpet, so that the conduit which leads fromthe fan 55 to the receptacle C may be enclosed to permit a forcefuldraft of air to be supplied to the receptacle for directing the fuelvapors to the ignition point.

Careful experimentation has proven certain proportions must bemaintained between the housing or receptacle C and the member D. For thebest result the exterior surface 37 of the body 30 is convex, anddisposed directly above the outlet end of the oil passageway 16 and at adistance from the top edge of the extension 15 which is substantiallyequivalent to the diameter of the passageway 16. For the furnace such asis ordinarily used in private dwellings, an oil burner may be used inwhich the radius from which the exterior surface 37 of the member D isstruck is equal to 2%, and the internal diameter of the receptacle C andmore particularly the portion 20 of this receptacle is 7 The member Dfor this size of oil burner depends into the compartment of thereceptacle C from 2 to 2%.

In operation the liquid fuel is fed from the tank 45 thru the line 46into the receptacle pan 10 until the level of the fuel lies just belowthe top edge of the air extension 15; the level of the fuel not beingermitted to rise any higher incidentto the oat valve control 47. A draftor a blast of air is fed through the passageway 16 and striking thesurface 37 is deflected laterally of the member D and flows toward theconstricted annular outlet between the top of the member D and the topof the receptacle C. This has a tendency to produce a vacuum in thereceptacle compartment 11 adjacent the surface of the fuel oil, and thevapors on the fuel oil are carried upwardly toward the top of thereceptacle and are ignited at the exit between the top of the member Dand the top of the receptacle or housing C; the flames being forcedoutwardly by the flaring surface 36. The member D, of course, becomesheated and by conduction the lieat is carried into the receptacle andthe fuel liquid vaporized.

From the foregoing description of this invention it is apparent that anoil burning apparatus has been provided in which the fuel or oil istreated, vaporized, and burned in a novel manner incident to the novela1- rangement of parts. The efficiency in combustion is high, andconsequently the operating cost is low.

In Figure 5 has been illustrated a modified form of oil burner, in whichthe pan portion 10 of the housing C is provided with an air passageway16 which extends laterally through the pan 10*, so that the air tube 50*extends on a horizontal axis into the passageway 16 for feeding of airinto the compartment of the receptacle C. This merely illustrates a formof invention to be used in connection with furnaces where the draftarrangement cannot be constructed as is illustrated in the preferredembodiment of this invention.

Various changes in the shape, size, and arrangement of parts may be madeto the forms of the invention herein shown and described, withoutdeparting from the spirit of this invention or scope of the claims.

, I claim:

1. In an oil burner the combination of an oil receiving receptacle,means for feeding oil into the receptacle to a predetermined normallevel, a member supported in a depending relation in the upper portionof the receptacle with its receptacle facing surface disposed in acontinuously converging relation with respect to the inner surface ofthe receptacle from a location above the plane of normal liquid-levelwithin the receptacle upwardly towards the outer edge 'of thereceptacle, the said member at its outer end being annularly spaced fromthe receptacle to provide an opening from the receptacle, and meansproviding an air passageway in the receptacle, opening above the normalliquid level immediately below the member in such manner that the airentering the receptacle strikes against the member and is laterallydeflected towards the ace between the upwardly converging sur aces ofthe member and receptacle.

2. In an oil burner the combination of an.

stantially convex lower surface, and spaced lugs extending laterallyfrom the upper end of the bafile member for'engagement with thesupporting flange of the receptacle to .hold the baffle member in aspaced dependin re lation with the receptacle and in annuflarly spacedrelation with the facing walls of the receptacle.

3.- In an oil burner the combination of an oil receptacle having acompartment opening upwardly, a member supported in depending.

relation in the upper portion of the compartment of the receptacle withits receptacle facing surface disposed convergent with the inner surfaceof the receptacle from the bottom of the member upwardly towards theopen top of said compartment, said member being annularly spaced at theto of the compartment from the facing wal s of the ported by thereceptacle depending therein.

and providing a convex bafile surface disposed in convergent relationwith the inside surface of the receptacle from the lowermost point ofthe bafile towards the outlet opening of the receptacle, and conduitmeans connected with said receptacle having an outlet end facingcentrally toward said baflle surface for dlrecting an air blast into thespace just below said baflle surface.

5. In an oil burner the combination of an oil receiving receptaclehaving a compartment opening upwardly, a bafile member carried by thereceptacle at the mouth of the compartment and extending into thereceptacle and providing a deflecting surface disposed convergently withthe interior walls of saidreceptacle, means for sup lying oil to thereceptacle to a predetermined level in spaced relation below the bafllesurface of said bafile member, and conduit means connected with saidreceptacle and havin an outlet opening above the predetermine oil leveland spaced below the bafile surface of said bafile member for directinga blast of air into the space between the oil level and baffle member ina direction normal to the oil level.

6. In an oil burner the combination of a receptacle inculding an oilpan, means for admitting oil to the oil pan to a predetermined level,means for directing a blast of air upwardly centrally through the oilpan, said receptacle also including an annular cylindrical portiondetachably resting on the top margin of the oil pan as a continuationthereabove, said cylindrical portion having lateral extensions on theupper margin thereof, a bafile providing a convex deflecting surface,and supporting lugs rigid with the bafile resting on the extensions ofthe cylindrical portion with the bafiie depending in the c lindricalportion and facing the blast air which is directed into the pan, thecylindrical portion providing inside vertically straight walls whichconverge with respect to the convex bafiie surface, the ugper margin ofthe bafile being spaced from .t e top edge of the cylindrical portion toprovide an annularoutlet openin around said baffle.

J S JOSEPH BARRETT.

